Specifications checked against manufacturer pages on 2026-08-23.
The Anker SOLIX C1000 (1,056 Wh, 1,800 W) and the Anker SOLIX C800 (768 Wh, 1,200 W), compared on the figures their makers publish. Anker SOLIX changed 7 published figures between them — rated capacity, continuous AC output, full recharge from wall, among others — and states 2 more only for one of the two.
In short. The C1000 leads on every normalized measure that could be decided: watt-hours per pound (37.1 Wh/lb vs 33.2 Wh/lb). The other 5 of 6 tie or cannot be compared. Read the runtime table before deciding — a clean sweep on ratios does not mean the other unit fails your outage.
Check the current price
Links go to the exact base unit we compared, not a bundle. Amazon prices change daily.
We do not link the C800: we could not confirm a listing for the exact base unit, and we do not link a guess.
Specifications, side by side
Numbered notes below the table give the source location or a caveat for figures that need one; check marks mark the better figure where one can be judged; “Manufacturer does not state” means absent from that maker’s page as of its check date listed under Sources. UPS switchover is how long the outlets go dark when grid power drops.
| Specification | Anker SOLIX C1000 | Anker SOLIX C800 |
|---|---|---|
| Rated capacity | 1,056 Wh1 ✓ | 768 Wh2 |
| Usable capacity (calculated)* | 898–950 Wh | 653–691 Wh |
| Continuous AC output | 1,800 W3 ✓ | 1,200 W4 |
| Surge output | No conventional surge stated (2,400 W boost mode)5 | 1,920 W6 |
| Full recharge from wall | <60 min7 | 58 min8 |
| Cell chemistry | LiFePO49 | LiFePO410 |
| Rated cycle life | 3,000 cycles to 80%11 | 3,000+ cycles to 80%12,13 |
| UPS switchover | <20 ms14 | ≤20 ms15 |
| Expandable | Yes, up to 2,112 Wh16,17 | Manufacturer does not state |
| Max solar input | 600 W18 ✓ | 300 W19 |
| Max AC charging input | 1,300 W20 ✓ | 1,100 W21 |
| AC outlets | 622 ✓ | 523 |
| Highest USB-C port | 100 W24 | 100 W25 |
| App control | Yes26 | Yes27 |
| Stated noise | Manufacturer does not state | Manufacturer does not state |
| Warranty | 5 years28 | 5 years29 |
| Weight | 28.44 lb30 | 23.15 lb31 ✓ |
| Manufacturer list price when checked | $449.9932 | Manufacturer does not state |
* Calculated: rated capacity × an assumed 85–90% conversion efficiency; no maker publishes a usable figure.
Notes on the figures
- C1000, rated capacity: 1056Wh
- C800, rated capacity: Rated capacity as stated by the manufacturer.
- C1000, continuous output: 1800W Pure Sine Wave
- C800, continuous output: Continuous AC output at 120 V.
- C1000, surge: Anker labels 2,400 W as ‘SurgePad’, a mode that raises output for resistive loads such as heaters. It is not a conventional motor-start surge rating and should not be read as one.
- C800, surge: Conventional surge rating; the page separately markets a boost mode of 1,600 W for resistive loads. The maker’s FAQ says that boost mode works best with heat-generating devices and does not support precision instruments or devices with strict voltage requirements.
- C1000, full recharge: Stated as ‘a full charge in under an hour’; 60 minutes is the upper bound, not a precise figure.
- C800, full recharge: Full recharge time with UltraFast mode activated in the Anker app, drawing 1,100 W from the wall.
- C1000, cell chemistry: LiFePO4 (Lithium Iron Phosphate)
- C800, cell chemistry: Lithium iron phosphate (LFP) cells.
- C1000, cycle life: 3,000 (80% Capacity)
- C800, cycle life: Stated as 3,000+ cycles, so the figure is a lower bound.
- C800, cycle life: Remaining capacity after the stated cycle count, from the same specification entry as the cycle figure.
- C1000, UPS switchover: Stated as under 20 ms; the manufacturer gives an upper bound, not a measured figure.
- C800, UPS switchover: The maker’s C800-series page describes the switchover as under 20 ms. Upper bound.
- C1000, expandable: Up to Max. 2112Wh Capacity with Expansion Battery (Coming soon.)
- C1000, expandable: The expansion battery was marked ‘coming soon’ on the product page when checked; confirm it is actually on sale before counting on it.
- C1000, solar input: Solar Input Recharge: 600W Max, 11-60V MPPT
- C800, solar input: Maximum solar input; the specification list adds an input window of 11-60 V at 10 A. The 2.3-hour figure is to 80%, not to full.
- C1000, AC input: AC Input Recharge: 1,300W Max
- C800, AC input: Maximum wall-charging draw, reached with UltraFast mode activated in the Anker app.
- C1000, AC outlets: AC Outlets: 6×
- C800, AC outlets: The receptacle type is printed as NEMA 6-20 on the specification list even though AC output is stated as 120 V; the standard 120 V household receptacle is designated NEMA 5-20.
- C1000, USB-C: Two USB-C ports; highest single port is 100W.
- C800, USB-C: The stronger of the two USB-C ports; the second port tops out at 30 W. The maker’s FAQ states the USB-C ports are output only.
- C1000, app: Wireless Connection for App: Wi-Fi and Bluetooth
- C800, app: The app connects over Wi-Fi or Bluetooth.
- C1000, warranty: Warranty: 5-Year Warranty
- C800, warranty: The specification list also states the warranty as 5 Years. The figure appears on the maker’s certified refurbished listing, the only page where this model is still sold.
- C1000, weight: Net Weight: 28.44 lb / 12.9 kg
- C800, weight: Net weight of the power station itself.
- C1000, price: Manufacturer list price when checked; a $20 code brought it to $429.99 that day.
The same specs, normalized
Ratios, so the bigger unit does not win by default.
| Measure | C1000 | C800 |
|---|---|---|
| Cost per watt-hour | Not comparable — Anker SOLIX does not state a price for the C800. | |
| Watt-hours per pound | 37.1 Wh/lb ✓ | 33.2 Wh/lb |
| Surge headroom | Not comparable — the C1000 figure is a boost-mode rating, not a motor-start surge. | |
| Recharge rate | ≥17.6 Wh/min | 13.2 Wh/min |
| Rated cycle life | 3,000 | 3,000 |
| Continuous watts per dollar | Not comparable — Anker SOLIX does not state a price for the C800. | |
Definitions and direction of each ratio: How we verify. A recharge rate marked ≥ is computed from an upper-bound recharge time, so the true rate is at least that figure; no check mark on that row.
What each one runs, for how long
| Appliance | C1000 | C800 |
|---|---|---|
| Full-size refrigerator 150 W, 900 W start, 35% duty · eff. 80%–87% |
16–17 hr | 12–13 hr |
| Mini fridge 70 W, 400 W start, 30% duty · eff. 70%–87% |
35–44 hr | 26–32 hr |
| CPAP without humidifier 40 W · eff. 70%–82% |
18–22 hr | 13–16 hr |
| CPAP with heated humidifier 95 W · eff. 80%–87% |
8.9–9.7 hr | 6.5–7.0 hr |
| Gas furnace blower 400 W, 1600 W start, 40% duty · eff. 85%–90% |
5.6–5.9 hr | 4.1–4.3 hr |
| 1/3 hp sump pump 500 W, 1800 W start, 15% duty · eff. 85%–90% |
12–13 hr (start-up not assessed) | 8.7–9.2 hr |
| Router and modem 20 W · eff. 70%–82% |
37–43 hr | 27–31 hr |
| Laptop 60 W · eff. 70%–87% |
12–15 hr | 9.0–11.1 hr |
| 1500W space heater 1500 W · eff. 82%–88% |
about 0.6 hr | Will not run |
Calculated, not measured: hours = rated Wh × efficiency ÷ (appliance W × duty); assumptions on How we verify. “Unlikely to start”: start-up surge exceeds the stated surge rating. “Start-up not assessed” appears where the start-up draw meets or exceeds the unit’s continuous rating and the unit states no conventional motor-start surge to check it against (C1000); the hours assume the motor starts.
What the C800 changes
Of the 15 published specifications we compare, Anker SOLIX changed 7 (C1000 → C800); 6 are the same on paper.
- Rated capacity: 1,056 Wh → 768 Wh
- Continuous AC output: 1,800 W → 1,200 W
- Full recharge from wall: <60 min → 58 min
- Max solar input: 600 W → 300 W
- Max AC charging input: 1,300 W → 1,100 W
- AC outlets: 6 → 5
- Weight: 28.44 lb → 23.15 lb
Anker SOLIX states 2 more only for one of the two: Expandable (Yes, up to 2,112 Wh → Manufacturer does not state); Manufacturer list price when checked ($449.99 → Manufacturer does not state).
Not listed as changes: surge output (the two figures are not measured on the same basis; see the notes); stated noise (stated only for the C800).
What the differences mean
Weight for the capacity. The C1000 carries 37.1 Wh/lb against 33.2 Wh/lb for the C800. Both are two-hands-and-a-flat-surface units; the difference matters if the unit moves between car, porch and basement.
Which one, and for whom
On normalized measures the C1000 leads on watt-hours per pound (37.1 Wh/lb vs 33.2 Wh/lb). The C800 does not lead on any decided measure. The deciding figure is the one your own outage will test first:
- CPAP overnight. Switchover: C1000 under 20 ms, C800 up to 20 ms. A 40 W CPAP runs roughly 18–22 hr on the C1000 and 13–16 hr on the C800. Both makers state a 20 ms upper bound, so for one night’s CPAP the deciding figures are price and solar input.
- Keeping a refrigerator cold. The compressor has to start before hours matter. The C1000 states a boost figure rather than a motor-start surge rating; the C800 states a 1,920 W surge rating. A full-size refrigerator needs about 900 W to start.
- A multi-day outage with a generator or solar to recharge from. Full recharge: C1000 under 60 min, C800 58 min. The C1000 figure is an upper bound, not a measured time, so the two cannot be ranked from published numbers.
Check the current price
Links go to the exact base unit we compared, not a bundle. Amazon prices change daily.
We do not link the C800: we could not confirm a listing for the exact base unit, and we do not link a guess.
Related reading
A 768–1,056 Wh battery cannot do what a gasoline generator does — only the C1000’s continuous rating covers a 1,500 W space heater, and it empties in about 0.6 hr — but it also cannot poison a household. How often gasoline generators kill indoors — and how the official count keeps being revised — is documented in our CPSC revision matrix, and this page puts every verified unit on the same refrigerator scenario.
Other comparisons with these models
Ordering before a storm? Check the arrival date at checkout — a unit that ships tomorrow can beat a better one that ships next week. Amazon Prime includes fast delivery on eligible items and starts with a free trial; we earn a commission if you join.
Sources and method
- Anker SOLIX C1000: manufacturer product page, checked 2026-08-23.
- Anker SOLIX C800: manufacturer product page, checked 2026-08-24.
Published specifications only; no bench tests. Method: How we verify. More: Comparisons.